To Aesthetix users

I applaude you efforts to try and resolve an issue as frustrating as this. I had a similar problem with another phonostage that tested my patience thoroughly. Buzz and hum were prevalent in both channels and after several experiments with cables and positioning (solid state unit so no tube swapping), the phonostage went back. Turns out it was an grounding issue involving the chssis. While the vendor fixed it, the whole ordeal left a bad taste in my mouth. It's no longer in my system. Sometimes you just have to move on.

Hi Patrick,

I have an Io also. It is about 5 years old. My Io is noisy (tube rush) but not what you are describing. Based on my experience with the Io, the citical tubes are V1 and V2. You already know this.

Take a look at this link:

http://www.musicalsurroundings.com/aesthroedrst.html

I am wondering if this is the issue with your Io.

Regards,
Rich Maurin

Have you tried swapping tubes out in the power supply?

If you have a tube tester, it may be time to check out all the tubes.

Hi guys, my Io has the latest resistors, so that isn't the problem.

I haven't tried swapping the PS tubes... no EL34s lying around (or rather there are some, but I'm not sure how good they are). No tube tester either :-(

Patrick

Patrick, it definitely sound like RF. I bet if you placed the Io somewhere else it would not be affected by the RF. I don't think changing the el34's will do anything. BTW is this noise recently developed?